The sole Potez 662, presumably at Méaulte where it was built. It was the only new airliner at the 1938 Paris Air Show, although derived from the Potez 661. It still had a twelve-passenger capacity but each of the four engines was three times as powerful! Cruise speed thus leapt from 300 km/h to 400 km/h. Range given as 1000 km. Under the Vichy government, the aircraft was used by General Charles Huntziger, who had signed the armistice on 22 June 1940. Returning to Vichy from Algiers it crashed on 12 November 1941 on the south slope of the Mont Aigoual. All seven people on board, including Huntziger, were killed. Photo from: Nationaal Archief (Netherlands)

'Set up in the Congress Street Plaza on Chicago's Michigan Avenue as part of the city's observation of Aviation Week.' This aircraft's name is given elsewhere as Flagship Missouri. It crashed in Tennessee in 1943. Photo from: Hagley Museum and Library

The first Do 18 prototype, first flown from Lake Constance in March 1935. It crashed on 2 November 1935 in the Baltic Sea off Travemünde during a test flight. Photo from: Hagley Museum and Library

This is the second prototype of the Kellett XR-8, the XR-8A, which had rounded tailfins. It had two-bladed intermeshing rotors first, but these were replaced by three-bladed rotors soon. In a sequence of photos by Rudy Arnold, it is flagged down by a Philadelphia motorcycle cop at a 25 mph speed limit sign - much the same joke as seen in photo 363024. Flying the troublesome Kellett helicopters was not fun at all, but it is not clear when both XR-8s flew for the last time. Photo by: Rudy Arnold / Smithsonian Institution

The Herrick HV-2 Vertaplane could fly as a biplane or as an autogyro. The upper wing could be unlocked, but not locked in flight. The earlier HV-1 crashed, but the HV-2A successfully converted from fixed-wing to autogyro mode for the first time in July 1937 over its Boulevard Airport, Philadelphia base. Test flying had already begun in 1936 and this visit to Floyd Bennett Field took place in that year if the date is correct. Photo by: Rudy Arnold / Smithsonian Institution

The XR-10, which was to carry ten troops, was said to be the largest helicopter in the world. It first flew on 24 April 1946. This photo was probably taken during a press demonstration on 25 September. Powered by two Wright R-975 Whirlwind engines in nacelles on the sides, the beast was dangerous to fly and the prototype crashed on 3 October 1949, killing test pilot Dave Driskill. Photo by: Howard Levy / Nederlands Instituut voor Militaire Historie

The PH-3 model of the Hall flying boat had a revised, modern-looking cockpit. Below is the terminal of Floyd Bennett Field, which was unsuccessful as an airport for New York. Note the civilian seaplane jetty. Coast Guard Air Station Brooklyn was on the far, eastern side of the field. Photo by: Rudy Arnold / Smithsonian Institution

Presumably photographed in 1997. Tied down, but looking good to go and reportedly not withdrawn until January 2000, this former Vietnamese C-47B was put on display in the new Naval Aviation Museum here at U-Tapao. The Orion must be one of two old P-3As delivered to Thailand for spare parts. Photo from: Nederlands Instituut voor Militaire Historie

Unfortunately the photographer wasn't too concerned about this wonderful aircraft. It was 43-47050 and crashed on 11 May 1971. The three crew and two of the 29 passengers perished. Photo by: Gustav Neuenschwander / ETH-Bibliothek Zürich

You can't come home from Cambodia without having your picture taken at Angkor Wat. Photo from: Nederlands Instituut voor Militaire Historie

'In front of the Erickson and Remmert hangar prior to the aircraft's export to Yugoslavia, Floyd Bennett Field, NY, March 20, 1939.' It was entered in the YU register on that day. One of eight L-10s acquired by Aeroput, it crashed in Croatia on 22 August 1940. Photo by: Rudy Arnold / Smithsonian Institution

A Coast Guard PBY-5A at Coast Guard Air Station San Diego, adjacent to Lindbergh Field. When the USCG was no longer needed for anti-submarine work, Air-Sea Rescue Squadron 1 was formed late in 1943 and R-1, US Navy Second Series BuNo 2485, was its first aircraft. Photo from: Wright State University

Kellett helicopter with twin intermeshing rotors. This prototype first flown 7 August 1944. One XR-8 and one XR-8A built. Programme cancelled by US Army in 1946, but at least one of the helicopters was still being flown in 1947. Photo from: Wright State University

Beautiful photo of German airmen with an Albatros scout. 424 Albatros C.V aircraft were built but the type was not successful, 'rather slow and unwieldy' according to a US document. Photo from: Library of Congress

Much more powerful than the original C.61 trimotor, these C.81s had one 400-hp Lorraine-Dietrich engine in the nose and two 280-hp Salmson radials. Seven passengers were carried. Note protective nosewheels. The second aircraft, F-AGGF, wears the CIDNA logo. Photo from: ETH-Bibliothek Zürich

The Hall Aluminum Aircraft Corporation was not terribly successful, but managed to sell nine PH-1 flying boats to the US Navy in 1930. Production of the PH recommenced in 1936 for the Coast Guard which ordered seven PH-2s, and seven PH-3s in 1939. These were the USCG's largest aircraft. Rudy Arnold photographed V164 off Coney Island - the building on the far right is the Half Moon Hotel which stood at West 29th Street. This one was lost in July 1939. The type was used for anti-submarine patrols during the war and kept in service until 1944. Photo by: Rudy Arnold / Smithsonian Institution

Light aircraft by the innovative Hall Aluminum Aircraft Corporation. Only one mainwheel but note the extensive strutting for the outriggers. Did the strange wing slats slide back? Also had unusual steering system hanging from the roof. Photo date given as 1 November 1936, but Charles Ward Hall was killed crashing this aircraft into a tree on 21 August 1936. Photo by: Rudy Arnold / Smithsonian Institution

A white elephant it was, but the 40-tonne Laté 521 did manage route proving flights to New York, without carrying paying passengers. Named after naval lieutenant Paulin Paris, the sole 521 was photographed over Long Island by Rudy Arnold, arriving from Biscarosse via Lisbon and Horta, Azores. The original design had four engines in tandem pairs but two outboard engines had to be added. One Laté 522 and three Laté 523 versions were also built. The five flying boats were all impressed by the French navy in 1939. None survived WWII. Photo by: Rudy Arnold / Smithsonian Institution

On the way back from San Francisco to Jackson, Mississippi, on a navigation trip, some Dutch trainee B-25 crews landed here for weather reasons. L2-45 and L2-46 were sent to KLM's West Indies branch late 1943 and then to Europe in 1945. 42-58413 is a Cessna C-78 Bobcat. Photo from: Nationaal Archief (Netherlands)

The Chilean navy received four Fairey IIIFs from 1927. They were based at Quintero and could be embarked on the battleship Almirante Latorre. Picture assumed taken in Hamble. Photo from: Flight